Despite celebrating his 37th birthday in November, it now appears certain Giggs will be handed a one-year contract extension in the summer.
The Welshman might have ruled out any possibility of a return to the international stage but his commitment to United remains undiminished.
And once again, Giggs has proved Ferguson can rely on him in times of crisis.
Spot on: Giggs celebrates his penalty - the winner - against Liverpool
'Keeping Ryan fresh is going to be the secret for us,' said the United boss. 'We have lost Ji for seven matches, which is a lot because he makes such a tremendous contribution to our team. We needed Ryan fresh for this challenge.'
It means that after only five appearances in two months because of a niggling hamstring injury, Giggs was heavily involved in United's Christmas programme before driving home his side's second-minute penalty winner against Liverpool on Sunday.
Eleven and counting: Giggs is chasing his twelfth title with United
Little wonder the midfielder - who would be making his 600th leagueappearance if he features against Tottenham on Sunday - is so keen toextend his Old Trafford stay, and why Ferguson is equally happy to havehim.
'Ryan is an incredible human being,' said Ferguson.
'He defies the logic of forwards when he plays at the level he did last Sunday.
'Obviously we know how to manage him. He doesn't play every week but he makes a contribution that lifts the team. He did that in the second half last week. He was outstanding.
'His fitness was fantastic. He kept going for the whole 90 minutes. He has been doing that for two decades.
'No other player has ever done that - or is ever likely to. He is quite an amazing man.'
That will be welcome news for Giggs, who is bidding to claim an unprecedented 12th title this term as his career extends into a third decade.
'I am feeling good and as long as I am feeling good and still enjoying it, I will carry on playing,' he told the Manchester Evening News.
'As long as the club wants me as well, I will.' David Beckham was never going to play for Spurs against us insists Sir Alex FergusonSir Alex Ferguson: Harry Redknapp's straightforward approach is secret to Tottenham's successMan United and Spurs consider move for highly-rated midfielder PetrovicAll the latest Manchester United news, features and opinion
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